1420404544 has 56 divisors (see below), whose sum is σ = 3117538088. Its totient is φ = 637839360.

The previous prime is 1420404529. The next prime is 1420404547. The reversal of 1420404544 is 4454040241.

It can be written as a sum of positive squares in 4 ways, for example, as 39538944 + 1380865600 = 6288^2 + 37160^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420404547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7714 + ... + 53854.

It is an arithmetic number, because the mean of its divisors is an integer number (55670323).

Almost surely, 2^1420404544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1420404544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1558769044).

1420404544 is an abundant number, since it is smaller than the sum of its proper divisors (1697133544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1420404544 is a wasteful number, since it uses less digits than its factorization.

1420404544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46203 (or 46193 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 1420404544 is about 37688.2547221280. The cubic root of 1420404544 is about 1124.0975924515.

Adding to 1420404544 its reverse (4454040241), we get a palindrome (5874444785).

The spelling of 1420404544 in words is "one billion, four hundred twenty million, four hundred four thousand, five hundred forty-four".